US2674552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and material for coating iron and steel surfaces
Assignee: Detrex Corp
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Filing: 1950-06-06
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Granted: 1954-04-06
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Expires: 1970-06-06
Abstract
No abstract record available.
Inventors
- 👤 William A Callahan
- 👤 Frank L Gendernalik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:28
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A METAL COATING COMPOSITIONS CONSISTING ESSENTIALLY BY WEIGHT OF ABOUT 85-97.5% DIHYDROGEN PHOSPHATE COATING CHEMICALS, ABOUT .5-5% LICORICE EXTRACT, AND ABOUT 2-10% BORIC ACID.
Claim 2
Dependent Claim
24 words
A METAL COATING COMPOSITIONS CONSISTING ESSENTIALLY BY WEIGHT OF ABOUT 85-97.5% DIHYDROGEN PHOSPHATE COATING CHEMICALS, ABOUT .5-5% LICORICE EXTRACT, AND ABOUT 2-10% BORIC ACID.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |